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LX8385 Datasheet(PDF) 1 Page - Microsemi Corporation |
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LX8385 Datasheet(HTML) 1 Page - Microsemi Corporation |
1 / 8 page DESCRIPTION KEY FEA TURES s s s s s Three-Terminal Adjustable Or Fixed Output Voltage s s s s s Guaranteed 1% Voltage Reference Accuracy Over Line, Load And Temperature (LX8385B) s s s s s Guaranteed < 1.5V Headroom At 3A (LX8385) s s s s s Guaranteed < 1.3V Headroom At 3A (LX8385A/8385B) s s s s s Output Current Of 3A Minimum p 0.015% Line Regulation p 0.1% Load Regulation The LX8385/8385A/8385B series ICs are positive regulators designed to provide 3A output current. Each regulator yields higher efficiency than currently available devices with all internal circuitry designed to operate down to a 1V input-to-output- differential. In these products, the drop- out voltage is fully specified as a function of load current. The LX8385's dropout is guaranteed at a maximum of 1.5V at maxi- mum output current, decreasing at lower load currents. The LX8385A/85B have a maximum dropout voltage of 1.3V. The LX8385B offers a tighter voltage reference tolerance: ±1.0% over line, load and temperature, with 0.8% initial accu- racy. The LX8385/85A have 1.0% initial accuracy, with 2% over line, load and tem- perature. The LX8385/85A/85B series devices are pin-compatible with earlier 3-terminal regulators, such as 117 series products. While a 10µF output capacitor is required on both input and output of these new devices, this is generally included in most regulator designs. The quiescent current of the LX8385/ 85A/85B series products flows into the load, increasing efficiency. This feature contrasts with PNP regulator designs, where up to 10% of the output current is wasted as quiescent current. The LX8385-xxI is rated for -25°C to +125°C applications, and the LX8385-xxC /8385B-xxC is rated for 0°C to +125°C applications. PRODUCT HIGHLIGHT 3.3V, 3A REGULATOR APPLICA TIONS s High Efficiency Linear Regulators s Post Regulators For Switching Power Supplies s Battery Chargers s Constant Current Regulators s Graphics & Standard Supplies s Processor I/O Supply s Low Voltage Memory & Chipset Supplies 3A L OW D ROPOUT P OSITIVE R EGULA TORS P RODUCTION D AT A S HEET T HE I NFINITE P OWER OF I NNOV A TION LX8385-xx/8385A-xx/8385B-xx LIN DOC #: 8385 LX8385 200 Ω 1% 1% 3.3V at 3A 5V OUT IN ADJ 1500µF, 6.3V 6MV1500GX 2x 1500µF, 6.3V 6MV1500GX from Sanyo 121 Ω Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number (i.e. LX8385-00CDDT). "xx" refers to output voltage, please see table above. * Consult factory for availability of TO-3 Metal Can. LX8385/85A/85B-00 Adjustable LX8385/85A/85B-33 3.3V LX8385/85A/85B-05 5.0V Part # Output Voltage AVAILABLE O PTIONS PER PAR T # Other voltage options may be available — Please contact factory for details. P ACKAGE ORDER INFORMA TION * T A (°C) P 1.5V LX8385-xxCP LX8385-xxCD 0 to 125 1.3V LX8385A-xxCP LX8385A-xxCD 1.3V LX8385B-xxCP LX8385B-xxCD -25 to 125 1.5V LX8385-xxIP LX8385-xxID Dropout Voltage Plastic TO-220 3-pin Plastic TO-263 3-pin DD Copyright © 1999 Rev. 2.0a 10/00 1 11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570 L IN F INITY M ICROELECTRONICS I NC . NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com. |
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